Construction crews working on the wall on the U.S.-Mexico border in Arizona significantly damaged a 1,000-year-old geoglyph located in Cabeza Prieta National Wildlife Refuge. It’s one of a number of places tribes on both sides of the border say are damaged or are threatened by the fast-tracked construction process. Tribal leaders say such desecration is happening at a record pace after the Trump administration sidelined cultural and environmental barriers to construction. We’ll hear from cultural historians and policy experts about that is being lost and what can be done about it.